<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="/successPage" method="post">
    <h2>用户登录</h2>
    <div>
        用户：<input type="text" name="username"/><br/>
        密码：<input type="password" name="password"/><br/>
        <button type="submit">登录</button>
    </div>
</form>
</body>
</html>